Improved paddle-wheel



@uitritftons 4gstellt @ffice ALEXANDER lllCKENZIE, OF- NEWl0lt'll,-KENTUCKY,ASSIGNOR TO HIMSELF AND WILLIAM Q DAVIS, SAME PLAGE.

am Paraninfo 65,252, me May 23,1867.

' IMPRovBD riunite-vvnssL.l

T0 WHOM IT MAY CONCERN: I A

Be it known that'l, Annxirnonu McKnNzlB, of Newport, in the county of Cnmpbcll, and State of Kentucky, have invented a ynew and useful improvement in Steamboat Paddle-Wheels; undI hereby'declare the following to be afull, clear, andexzict description thereof', reference being had to the accompanying drawings, melting part of this specification.l

The object of this invention is -t'o provide a paddleovheel for stcamboats possessing several prominent advantages ever those in ordinary use. In the accompanying drawings- Figure l is o perspective view of u peddle-wheel vembodying my improvement-s, as seen from the outside, in the form for a side-wheel steamer. v i i Figure is aidiograi'n, showing how a modification of the same is applied 'to o stern-wheel steamer. A is the framework of the wheel, 'consisting mainlyv o'thera-dial arti-1s B, 'inclined secondary :mns C, and

brace-rings E,-all being-secured to 'the'paddlc-shaft' l".v Upon the outer ends of the arms C are secured the floats or buckets G, by means of bevel-blocks H und staple-bolts I. 'The arms on each ofthe two or more sepurate series or planes stand in such relative position to. those in the other planes thit the buckets G are considernbly inclined from the direction of tlxe'paddleslm`t, although being from end to end cquidistant from it, so that, as the paddle revolves, (the direction of which revolution is shown by arrows the buckets will not enter -the water from ond. to end`at the saule tinge, but grn.dually,so that' while the one bucket ison the point of becoming submerged, the next following will have commenced to enter the water, thus avoiding theexceedingly disagreeable and destructive jar incident to tho ordinary wheel having buckets at right angles in their length tothe side of the boat. It will be observed 'thu't'tbe frame ot the wheel has' 'n.*nov'cl form of construction in respect to the arms, the same boing formed of `two pieces B and C, the lutter being` secured at about its mids 4length to the further, carrying atthe outer endthe buclgetor peddle, and at the inner end being secured to the preceding radial arm B. This arrangement gives great strength and firmness to the' framework of my wheei,

.and materially lessons .the strain of the buckets upon the frame,'as the direction in which the resistance will bear upon the arms B will' bealmost as much :m end strain asaside strain upon the said arms. This arrangement of inclined secondary or sub-arms C also possesses advantages in giving tho buckets the right direction to avoid raising the water when leaving the same, nhichthrowing up of water not only involves n very consid crable loss of power, but also rots thc wood-work behind the wheel. The buckets onaan ordinary paddle-Wheel, if placed in the radially inclined position,.or thc necessary position to leave the water freely 'without rising 4the same, would notonlyinvolve a'cutting away of the arms to o. bevel at the ends, or some other means for` the purpose, butvthc bloiv upon the water incident to such position would be very objectionable; whereas, with roy paddle-ivheel, owing to the gradual subnicrgcnco of the buckets, such objection Awould be'obviated. It is also claimed that my'isheel will be much lcss liable to domage in ico or drift, as the position of the 'buckets or paddles wonldtenl to push the obstructions aside rather than to strike them with e heavy downward blow, as

is the caso witlrthc ordinary wheel now in use. A ,'.lhc j-.u inseparable from the ordinary wheel shakes the joints not` only of the machinery, but of the whole boot,ishakos bearings loose, and cuts out the journal-boxes, making it very desirable that said jar should be avoided ns much ns possible. Ilhis inclination of the buckets will bcv found ofi great advantagcin'caso of boats grounding on their bows, as by the reversal of the paddle-wheel the paddles Woulddeprcss thc stcrn by thc downwnrd draught the buckets would -have upon the water, which, together ,with the ivntcr forced, by the lateral inclinati-ion of the paddles, under the boat, would raise the bou', and usually clear said boat from the bar or obstruction wwithout the use' of Spurs, thus saving much loss of time and often much damage to thc'boat. v I

The improrcincnt I claimos equally npplicnbloito stern us, to .sido-wheel boats, by in a. manner duplicating the wheel, or arranging the buclrctsfon thc double inclination, asV seen in fig. f2. n 1

I claim herein as new, and of myivinvcntion- Y y The arrangement of inclined blades or buckets G, radial arms B', oblique sccondnry'urms G, and'brupc-rings E, snbstantially'us and for the purpose set forth. l A

In testimony oi' ivhivh invention I hereunto sotiny-hnnd.

' ALEXANDER McKENZIE. Witnesses Gun. 1I. Kniun'r,

JAMES LArnAN.' 

